Title :
Synthesis of automatic gain controllers for conical scan tracking radar
Author :
Guesalaga, A. ; Tepper, S.
Author_Institution :
Dept. of Electr. Eng., Catholic Univ. of Chile, Santiago
fDate :
1/1/2000 12:00:00 AM
Abstract :
The automatic gain control (AGC) of a conical scan tracking radar IF amplifier is designed using H∞ synthesis. It is shown that this technique is particularly suited for this problem because of its loop shaping capabilities and because it can tackle particular frequencies effectively, providing a correct balance among closed-loop stability, fast response to echo changes, and rejection of frequencies other than the echo modulation. Two controllers are implemented and compared with a standard controller, showing significant improvement in system tracking
Keywords :
Bode diagrams; FM radar; H∞ control; automatic gain control; closed loop systems; control system synthesis; intermediate-frequency amplifiers; radar receivers; radar tracking; state-space methods; Bode plots; FM radar; H∞ synthesis; IF amplifier; automatic gain controller synthesis; closed-loop stability; conical scan tracking radar; correct balance; echo changes; echo modulation; fast response; loop shaping capabilities; nonlinear model; radar receiver; range-gated signal; rejection of frequencies; state space solutions; weighting functions; Automatic control; Closed loop systems; Control systems; Feedback loop; Filters; Frequency; Gain control; Radar tracking; Stability; Target tracking;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
